<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>

</body>
<script>

    function sum() {
        console.log(arguments, typeof arguments);
        // 遍历 arguments
        for (let item of arguments) {
            console.log(item);
        }

    }

    sum(1, 2, 3, 4, 5);


</script>

</html>